Abstract:
:Single nucleotide polymorphism (SNP) interaction plays a critical role for complex diseases. The primary limitation of logistic regressions (LR) in testing SNP-SNP interactions is that coefficient estimates may not be valid because of numerous terms in a model. Multivariate adaptive regression splines (MARS) have useful features to effectively reduce the number of terms in a model. To study how MARS can address these drawbacks possibly better than LR, the power of MARS and LR with SNPs using the reference-coding and additive-mode scheme was compared using simulated data of ten SNPs for 400 subjects based on 1,000 replications for five interaction models. In overall scenarios, MARS performed better than LR. In the model with a dominant two-way interaction, the power range was 76-96% for MARS and 1-8% for LR in both coding schemes. In the dominant three-way interaction model, the power was 57-85% for MARS and less than 4% for LR. In the prostate cancer example, we evaluated the association between ten SNPs and prostate cancer risk in 649 Caucasians. The best model with one two-way and one three-way interaction was selected using MARS. The findings supported that MARS may provide a useful tool for exploring SNP-SNP interactions.
journal_name
J Hum Genetjournal_title
Journal of human geneticsauthors
Lin HY,Wang W,Liu YH,Soong SJ,York TP,Myers L,Hu JJdoi
10.1007/s10038-008-0313-zsubject
Has Abstractpub_date
2008-01-01 00:00:00pages
802-811issue
9eissn
1434-5161issn
1435-232Xpii
10.1007/s10038-008-0313-zjournal_volume
53pub_type
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